Alert archive / Ohio / Mesoscale Discussions in 2011
Mesoscale Discussion 74
The Storm Prediction Center issued this mesoscale discussion at Feb 1, 2011, 4:54 PM EST for 48 counties in Indiana; 55 counties in Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 1, 2011, 4:54 PM EST (21:54 UTC)
- Expired
- Feb 1, 2011, 10:00 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 103 counties
Adams County, IN, Allen County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Johnson County, IN, Kosciusko County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Montgomery County, IN, Morgan County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Wabash County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allen County, OH, Ashland County, OH, Auglaize County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Franklin County, OH, Fulton County, OH, Geauga County, OH, Greene County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Portage County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Van Wert County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH
The radar
The Cincinnati radar (KILN), 115 km from the middle of the area, began a volume at 21:56 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.9 hours before the alert went out and 114 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 447 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
091
ACUS11 KWNS 012154
SWOMCD
SPC MCD 012154
OHZ000-INZ000-020300-
MESOSCALE DISCUSSION 0074
NWS STORM PREDICTION CENTER NORMAN OK
0354 PM CST TUE FEB 01 2011
AREAS AFFECTED...NRN/CNTRL IND...NRN/CNTRL OH
CONCERNING...WINTER MIXED PRECIPITATION
VALID 012154Z - 020300Z
MDT TO HVY MIXED PRECIPITATION TYPES ARE EXPECTED THROUGH LATE
AFTERNOON AND EARLY EVENING.
DEEP/MOIST ASCENT ASSOCIATED WITH THE WARM CONVEYOR BELT OF THE
INTENSE EXTRATROPICAL CYCLONE OVER THE CENTRAL CONUS WILL SUPPORT
THE EWD SHIFT OF MODERATE TO HEAVY MIXED PRECIPITATION ACROSS CNTRL
IND THROUGH LATE AFTERNOON...AND EVENTUALLY CROSSING INTO OH BY 00Z.
WITH SUB-FREEZING SFC TEMPERATURES IN PLACE...MIXED PRECIPITATION
TYPES WILL OCCUR.
THE PREDOMINANT PRECIPITATION TYPE WILL BE FREEZING RAIN ALONG AND
SOUTH OF A LINE FROM KYNG TO KHUF...WHERE RATES AOA 0.2 INCHES PER
HOUR WILL OCCUR PER 19Z HRRR RUN. FARTHER NORTH...RUC FORECAST
SOUNDINGS INDICATE RELATIVELY COOLER TEMPERATURES IN THE WARM LAYER
/AOB 3C/ SUPPORTIVE OF MODERATE TO HEAVY SLEET...WITH SNOW ACROSS
FAR NW OH AND NE IND. AS LOW-LEVEL WAA CONTINUES...THE FREEZING RAIN
AREA WILL SHIFT NWD THIS EVENING.
..COHEN/ROGERS.. 02/01/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PBZ...CLE...ILN...IWX...IND...LOT...
LAT...LON 39358721 40328750 41248626 41698431 41738221 41808080
41248055 40578097 40048214 39708353 39388505 39078617
39358721SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 31, 7:56 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Brown and 32 more | 5 hr |
| Feb 1, 12:42 PM EST | Mesoscale Discussion | SPC | Bartholomew, Blackford, Boone, Brown, Clay, Clinton and 37 more | 5 hr |
| Feb 1, 4:36 PM EST | Mesoscale Discussion | SPC | Jasper, Lake, LaPorte, Newton, Porter, Saint Joseph and 1 more | 6 hr |
| Feb 1, 12:12 AM EST | Mesoscale Discussion | SPC | Ashtabula, Carroll, Columbiana, Cuyahoga, Geauga, Harrison and 8 more | 5 hr |
Nearby
Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in Indiana, 2011Every mesoscale discussion in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.